<template>
   <div class='login'>
       <el-form ref="form" :model="form" class="container" :rules="rules">
        <el-form-item>
          <div class="avatar">
            <img src="../assets/avatar.jpg" alt="">
          </div>
        </el-form-item>
        <el-form-item prop="username">
        <el-input  prefix-icon="icon icon-user-check" v-model="form.username" placeholder="账号"></el-input>
        </el-form-item>
        <el-form-item prop="password">
        <el-input prefix-icon="icon icon-key" v-model="form.password" placeholder="密码" type='password' @keydown.native.enter='submitForm("form")'></el-input>
        </el-form-item>
        <el-form-item>
        <el-button type="primary" class="login-btn" @click='submitForm("form")'>提交</el-button>
        </el-form-item>
       </el-form>
   </div>
</template>
<script>
import {checkUser} from '@/api'
export default {
  data() {
    return {
      form: {
        username: "",
        password: ""
      },
      rules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          // { min: 3, max: 5, message: "长度在 3 到 5 个字符", trigger: "blur" }
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          // { min: 3, max: 5, message: "长度在 3 到 5 个字符", trigger: "blur" }
        ]
      }
    }
  },
  methods: {
    submitForm(form) {
      //.validate()在页面加载成功后对表单进行校验。校验方法 $("选择器").validate()。
      //.valid()是一个名为 valid 的功能函数,回传 true 或是 false,作用是检查 #myform 物件是否验证成功
     //通过this.$refs.xxid的值来获取dom
     this.$refs[form].validate(valid => {
        if (valid) {
          checkUser(this.form).then(res=>{
            console.log(res)
            if(res.meta.status===200){
              //成功并跳转
              //跳转之前记录用户信息 token是后台发送过来的
              localStorage.setItem('userkey',res.data.token)
              //把username传到state中去
              // this.$store.commit('changename',res.data.username)
              localStorage.setItem('username',res.data.username)
              this.$router.push({name:'Home'})
            }else{
              // console.log(res.meta.msg)
              this.$message({
                message:res.meta.msg,
                type: 'warning'
              });
            }
          })
        } else {
          console.log("error submit!!");
          return false;
        }
      })
    }
  }
}
</script>
<style lang='scss' scoped>
.login {
  position: fixed;
  width: 100%;
  height: 100%;
  background-color: #2f4050;

  .container {
    position: absolute;
    left: 0;
    right: 0;
    width: 400px;
    padding: 0px 40px 15px 40px;
    margin: 200px auto;
    background: white;
    .avatar {
      position: relative;
      left: 50%;
      width: 120px;
      height: 120px;
      margin-left: -60px;
      margin-top: -60px;
      box-sizing: border-box;
      border-radius: 50%;
      border: 10px solid #fff;
      box-shadow: 0 1px 5px #ccc;
      overflow: hidden;
    }
    .login-btn {
      width: 100%;
    }
  }
}
</style>